The NightHowl LED Safety Necklace is adjustable to keep four-legged friends of all sizes safe and visible in the dark. This weather-resistant, durable safety necklace is made with a flexible polymer tube, and is illuminated 360¡ by two bright red LEDs. It has glow and flash modes, and can simply slide over your dog's neck for hours of nighttime fun and safety. As fun as this product is, the best part about the NiteHowl is that it keeps you and your furry friends seriously safe on those after-hours walks and campsite moon-howling sessions.